Process for artificial ventilation for assisting the volumetric

Details Process for artificial ventilation for assisting the volumetric Process for artificial ventilation for assisting the volumetric

1989-04-14

1991-08-20

Lewis, Aaron J.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

12820421, 12820425, 12820426, 12820428, A61M 1600

Patent

active

050405292

ABSTRACT:
An apparatus for artificial ventilation for assisting the volumetric breathing of a patient having a demand valve connected between a source of supply of gas and a spontaneous breath tube. This demand valve comprises a reference chamber connected to an expiration tube and a user and to the output of a Venturi tube connected by its inlet to the source of supply of gas. A generator of increasing pressure is provided for transfer of a complementary flow of gas, this generator being connected by its inlet to the source of gas supply and opening out in the upstream end of the Venturi tube assisting the user's exhalation.

REFERENCES:
patent: 3946729 (1976-03-01), Hanna
patent: 4163450 (1979-08-01), Kirk et al.
patent: 4206754 (1980-06-01), Cox et al.
patent: 4318399 (1982-03-01), Berndtsson
patent: 4444201 (1984-04-01), Itoh
patent: 4617924 (1986-10-01), Heim et al.
patent: 4635631 (1987-01-01), Izumi
patent: 4877023 (1989-10-01), Zalkin

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